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Iron borings coherer (Branly type), 1894

Radio Communication

1894

Circular unit of Finsen lamp

Therapeutics

1890-1900

Platt Brothers Notice

Textile Industry

1899

Casket presented to Francis William Webb

Miscellanea & Curiosities

1900

Experimental form of Marconi Company magnetic detector, 1900-1910

Radio Communication

1900-1910

Walnut and brass model of the "Great Paris Telescope"

Astronomy

1898-1900

Zenith X-ray tube and shield

Radiomedicine

1901-1913

Terrestrial globe showing cable routes, 1900-1920

Telecommunications

1900-1920

wall telephone, 1880-1920

Telecommunications

1880-1920

Copper earthing tube believed to have been used by Marconi, 1890-1897

Radio Communication

1890-1897

wooden baseboard for wall telephone no. 3, 1880-1910

Telecommunications

1880-1910

Cell used in interruptor circuit, 1875-1890

Telecommunications

1875-1890

Model of hygienic sanitary appliance

Domestic Appliances

1895

Granular microphone in bamboo tube, 1878-1890

Telecommunications

1878-1890

Experimental carbon block microphone, 1878-1890

Telecommunications

1878-1890

Hertzian receiving resonator, 1890-1894

Radio Communication

1890-1894

Pair of metal-rimmed spectacles

Ophthalmology

1891-1920

Granular microphone in glass tube, 1878-1890

Telecommunications

1878-1890

Strowger calling dial, 1906

Telecommunications

1906

Section of cross-Channel telephone cable, 1897

Telecommunications

1897

Model of a channel pipe, London, England, 1896

Sewerage & Sanitation

1896

Endoscope

Clinical Diagnosis

1875-1885

Scutcher

Textile Industry

1889

Portrait bust of Lord Kelvin, 1896

Telecommunications

1896

Automatic telephone wall, 1900-1910

Telecommunications

1900-1910

'Oxypathor', oxygen absorption machine, Canada, 1911-1915

Therapeutics

1910-1920

Jones 50-line switchboard, 1879.

Telecommunications

1879

horseshoe magnet and keep used with experimental form of magnetic detector, 1900-1910

Radio Communication

1900-1910

Morse tape on which signals were recorded by means of a coherer, 1900

Radio Communication

1900

Alarm whistle for use by psychiatric warders

Psychology, Psychiatry & Anthropometry

1890-1914

Double coherer (experimental), 1895-1906

Radio Communication

1895-1906

Glass necklace worn to prevent bronchitis, Chelsea, London, England, 1914

Ethnography and Folk Medicine

1914

wooden base for submarine cable laid across the River Medina, 1878

Telecommunications

1878

Experimental microphones with carbon pencils and cups, 1878-1890

Telecommunications

1878-1890

Set of 12 trial lenses and a pair of trial frames, Europe, 1880-1920

Ophthalmology

1880-1920

Experimental microphone using steel needles and gas carbon, 1878-1890

Telecommunications

1878-1890

Popular Wireless no. 1 vol. 1, 1922

Radio Communication

1922

Therapeutic Exercise Chair, Wiesbaden, Germany, 1901-1905

Therapeutics

1901-1905

Shamrock amulet

Ethnography and Folk Medicine

1914-1918

Grid slide from prototype Cox selenium-cell magnifier equipment, 1919-1920

Telecommunications

1910-1920

De Forest Audion 1906-1915

Electronic Components

1906-1915

Lens from prototype Cox selenium-cell magnifier equipment, 1910-1920

Telecommunications

1910-1920

Notched elder twig amulet

Ethnography and Folk Medicine

1901-1913

Cot plaque from Great Ormond Street Hospital

Nursing & Hospital Furnishings

1902

Plaque for cot, Great Ormond Street Hospital

Nursing & Hospital Furnishings

1900

Model of an intercepting trap drain, London, England, 1896

Sewerage & Sanitation

1896

Chronometer escapement mounted as an exhibition model in domed glazed case by William T. Heye

Clockmakers

1903

First Aid box, pine, inscribed Yorkshire Main Sidings/Signal Box

Fixtures & Fittings from Railway Buildings

1900-1920

dye sample

Industrial Chemistry

c.1890

Poured wax doll,with head turned to one side; inse

Materials Science Gallery

c. 1900